CN108019818B - Indoor unit of air conditioner - Google Patents

Indoor unit of air conditioner Download PDF

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Publication number
CN108019818B
CN108019818B CN201610935628.XA CN201610935628A CN108019818B CN 108019818 B CN108019818 B CN 108019818B CN 201610935628 A CN201610935628 A CN 201610935628A CN 108019818 B CN108019818 B CN 108019818B
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China
Prior art keywords
air
heat exchange
ion wind
generating device
wind generating
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CN201610935628.XA
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Chinese (zh)
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CN108019818A (en
Inventor
李健
王永涛
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Qingdao Haier Air Conditioner Gen Corp Ltd
Haier Smart Home Co Ltd
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Qingdao Haier Air Conditioner Gen Corp Ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007Indoor units, e.g. fan coil units
    • F24F1/0011Indoor units, e.g. fan coil units characterised by air outlets
    • F24F1/0014Indoor units, e.g. fan coil units characterised by air outlets having two or more outlet openings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007Indoor units, e.g. fan coil units
    • F24F1/0018Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0025Cross-flow or tangential fans
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/20Casings or covers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30Arrangement or mounting of heat-exchangers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/20Casings or covers
    • F24F2013/205Mounting a ventilator fan therein

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
  • Air-Flow Control Members (AREA)

Abstract

The invention provides an air-conditioning indoor unit, which comprises a shell, an air inlet and an air outlet, wherein the air inlet is positioned at the upper part of the shell; the heat exchange device is arranged in the shell and is configured to exchange heat with air flowing through the shell; the cross-flow fan is arranged in the shell, is positioned at the lower part of the heat exchange device, and is configured to promote part of natural air entering from the air inlet to flow to the heat exchange device and promote the heat exchange air after heat exchange of the heat exchange device to flow to the air outlet; and the ion wind generating device is arranged in the shell, is positioned at the front sides of the heat exchange device and the cross-flow fan and is configured to impel another part of natural air entering from the air inlet to directly flow to the air outlet through the ion wind generating device by virtue of electric field force so as to mix the other part of natural air with the heat exchange air subjected to heat exchange by the heat exchange device at the air outlet, so that the impact of local high-speed airflow is reduced, soft and uniform mixed air is formed, and a user can obtain cool but not cold, warm but not hot comfortable experience.

Description

Indoor unit of air conditioner
Technical Field
The invention relates to the air conditioning technology, in particular to an air conditioner indoor unit.
Background
Generally, the air outlet mode of the wall-mounted air conditioner indoor unit is bottom air outlet, and the air sent by the air supply mode is directly blown to the human body. In addition, since all of the blown air is heat-exchanged air, the air blown by such an air conditioning indoor unit is not soft. Especially, considering that the air outlet area and the air outlet range of the lower air outlet are limited, the air outlet is concentrated, and in the refrigeration mode, the air outlet temperature of the air conditioner is too low, so that the air conditioner is very uncomfortable when being blown to a user, and air conditioner diseases are easily caused. Therefore, how to reduce the impact of local high-speed cold airflow to alleviate or even eliminate air conditioning diseases on the premise of meeting the requirements of indoor cooling capacity and cooling efficiency is a technical problem that needs to be solved urgently by those skilled in the art.
Disclosure of Invention
An object of the present invention is to overcome at least one of the drawbacks of the prior art and to provide an indoor unit of an air conditioner with soft, uniform and comfortable air supply.
Another object of the present invention is to improve cooling/heating efficiency and cooling/heating effect of an indoor unit of an air conditioner.
Still another object of the present invention is to reduce noise during operation of an indoor unit of an air conditioner.
In order to achieve the above object, the present invention provides an indoor unit of an air conditioner, comprising: the air conditioner comprises a shell, a fan and a control device, wherein the shell is provided with an air inlet positioned at the upper part of the shell and an air outlet positioned at the lower part of the shell; the heat exchange device is arranged in the shell and is configured to exchange heat with air flowing through the shell; the cross-flow fan is arranged in the shell, is positioned at the lower part of the heat exchange device and is configured to promote part of natural air entering from the air inlet to flow to the heat exchange device and promote heat exchange air subjected to heat exchange by the heat exchange device to flow to the air outlet; and the ion wind generating device is arranged in the shell, is positioned at the front sides of the heat exchange device and the cross-flow fan, and is configured to impel another part of natural air entering from the air inlet to directly flow to the air outlet through the ion wind generating device by virtue of electric field force so as to mix the another part of natural air with the heat exchange air subjected to heat exchange by the heat exchange device at the air outlet.
Optionally, a first air guiding channel for guiding the natural air flowing out of the ion wind generating device to the air outlet and a second air guiding channel for guiding the heat exchange air flowing out of the cross-flow fan to the air outlet are further formed in the casing, wherein the first air guiding channel and the second air guiding channel are formed in the casing, and the first air guiding channel and the second air guiding channel are used for guiding the heat exchange air flowing out of the cross-flow fan to
The first air guide channel extends forwards or bends to the front part of the air outlet from top to bottom, and the second air guide channel extends forwards or bends to the rear part of the air outlet from top to bottom; and the inclination degree or the bending degree of the second air guide channel is greater than that of the first air guide channel.
Optionally, the ion wind generating device comprises at least one discharge module, each discharge module comprises a housing, a mesh electrode horizontally arranged in the housing, and a plurality of needle electrodes distributed on the upper side of the mesh electrode, wherein the mesh electrode is arranged in the housing, and the plurality of needle electrodes are arranged in the housing
The shell is provided with four peripheral wall plates so as to form an independent air supply duct separated from the flow path of the heat exchange air in the shell, and the upper part of the shell is hollowed or provided with vent holes so as to allow natural air to flow into the shell.
Optionally, the number of the discharge modules is multiple, the discharge modules are sequentially arranged, and projections of every two needle electrodes of the discharge modules adjacent to each other in the air outlet direction in the air outlet face of the ion wind generating device are overlapped.
Optionally, the number of the discharge modules is multiple, the discharge modules are sequentially arranged, every two needle electrodes of the discharge modules adjacent to each other in the air outlet direction are arranged in a staggered manner in the transverse direction, and the projections of the corresponding needle electrodes of the two discharge modules adjacent to each other in the air outlet direction of the ion wind generating device are on the same horizontal line.
Optionally, the number of the discharge modules is multiple, the discharge modules are sequentially arranged, and every two needle electrodes of the discharge modules adjacent to each other in the air outlet direction are arranged in a staggered manner in the transverse direction and the front-rear direction.
Optionally, the number of the discharge modules is multiple, the discharge modules are sequentially arranged along the air outlet direction, the needle electrode of each discharge module is electrically connected to a positive polarity or negative polarity high voltage terminal, and the mesh electrode of each discharge module is electrically connected to a ground terminal, so that the discharge modules are connected in parallel.
Optionally, the number of the discharge modules is plural, the plural discharge modules are sequentially arranged along the air outlet direction, the needle electrode of the discharge module located at one end of the ion wind generating device is electrically connected to a positive polarity or negative polarity high voltage terminal, the mesh electrode of the discharge module located at the other end of the ion wind generating device is electrically connected to a ground terminal, and the mesh electrodes of each of the discharge modules except the discharge module located at the other end of the ion wind generating device, which are arranged from one end of the ion wind generating device to the other end of the ion wind generating device, are electrically connected to the needle electrode of the discharge module located adjacent to and downstream of the ion wind generating device, so that the plural discharge modules are connected in series.
Optionally, in each of the discharge modules, a distance L between the tip of the needle electrode and the mesh electrode is set so that it satisfies: l = aL1Wherein a is any constant in the range of 0.7-1.3, L1So that the wind speed of the ion wind at the wind speed central point of the mesh electrode reaches the maximum wind speed VmaxThe distance between the tip of the needle electrode and the mesh electrode is equal to the distance between the tip of the needle electrode and the mesh electrode, and the wind speed central point of the mesh electrode is the projection point of the tip of the needle electrode on the mesh electrode.
Optionally, the casing comprises a frame for supporting the cross-flow fan and the heat exchange device, a casing covering the frame, and a panel connected to a front side of the casing for forming a front portion of the casing
The air inlet is formed in the top of the housing, and the ion wind generating device is arranged between the housing and the panel.
The air conditioner indoor unit drives part of natural air in the environment space to form heat exchange air after heat exchange of the heat exchange device through the cross flow fan, and the heat exchange air flows to the air outlet. Meanwhile, the ion wind generating device prompts the other part of natural air of the environmental space to directly flow to the air outlet through the ion wind generating device. The heat exchange air after heat exchange by the heat exchange device is mixed with the other part of natural air passing through the ion wind generating device at the air outlet, thereby forming soft, uniform and comfortable mixed wind. Even if the mixed air is directly blown to the user, the user can only feel cool but not cold or warm but not hot comfortable experience, and sensory stimulation cannot be brought to the user or the physical health of the user is not damaged.
Furthermore, the cross-flow fan drives the air-conditioning indoor unit to introduce a part of natural air and then send out heat exchange air, and the ion air generating device drives the air-conditioning indoor unit to introduce another part of natural air and then send out, so that the air-conditioning indoor unit has larger integral air quantity and air speed, the requirement of the integral indoor refrigerating capacity is met on the premise of ensuring the comfort degree of a user, the balance of the indoor temperature is ensured, and the refrigerating/heating efficiency and the refrigerating/heating effect of the air-conditioning indoor unit are improved.
Furthermore, the ion wind generating device makes the particles in the air obtain kinetic energy by means of electric field force, so that soft, uniform and comfortable ion wind without local high-speed airflow is formed. Compared with a rotary air supply assembly (such as a fan), the ion wind generating device has the advantages of small pressure loss, low energy consumption, low noise and the like, so that the overall noise of the air conditioner indoor unit during operation is reduced to a certain extent.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic structural view of an indoor unit of an air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic plan view of an air conditioning indoor unit according to an embodiment of the present invention;
fig. 3 is a schematic structural exploded view of an air conditioning indoor unit according to an embodiment of the present invention;
fig. 4 is a schematic front view of an air conditioning indoor unit according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view taken along section line A-A in FIG. 4;
FIG. 6 is a schematic structural view of a pre-stage discharge module of the ion wind generating apparatus according to an embodiment of the present invention;
FIG. 7 is a schematic cross-sectional view of a pre-stage discharge module of an ion wind generating apparatus according to an embodiment of the present invention;
fig. 8 is a schematic structural view of a connection relationship between a plurality of discharge modules of the ion wind generating apparatus according to an embodiment of the present invention;
fig. 9 is a schematic structural view of a connection relationship between a plurality of discharge modules of an ion wind generating apparatus according to another embodiment of the present invention;
FIG. 10 is a schematic front view of a pin grid layout of an ionic wind generating device according to one embodiment of the present invention;
FIG. 11 is a schematic side view of a pin grid layout of an ionic wind generating device according to one embodiment of the present invention;
FIG. 12 is a schematic top view of a pin grid layout of an ionic wind generating device according to one embodiment of the present invention;
FIG. 13 is a schematic front view of a pin grid layout of an ionic wind generating device according to another embodiment of the present invention;
FIG. 14 is a schematic side view of a pin grid layout of an ionic wind generating device according to another embodiment of the present invention;
FIG. 15 is a schematic top view of a pin grid layout of an ionic wind generating device according to another embodiment of the present invention;
FIG. 16 is a schematic front view of a pin grid layout of an ionic wind generating device according to yet another embodiment of the present invention;
FIG. 17 is a schematic side view of a pin grid layout of an ionic wind generating device according to yet another embodiment of the present invention;
fig. 18 is a schematic top view of a pin grid layout of an ion wind generating device according to still another embodiment of the present invention.
Detailed Description
The embodiment of the invention provides an air conditioner indoor unit. Fig. 1 is a schematic structural view of an air conditioning indoor unit according to an embodiment of the present invention, fig. 2 is a schematic plan view of the air conditioning indoor unit according to an embodiment of the present invention, fig. 3 is a schematic structural exploded view of the air conditioning indoor unit according to an embodiment of the present invention, and referring to fig. 1 to 3, the air conditioning indoor unit 1 according to an embodiment of the present invention includes a cabinet 10, a heat exchanging device 20 disposed in the cabinet 10, a cross-flow fan 30 disposed at a lower portion of the heat exchanging device 20, and an ion wind generating device 40 disposed at a front side of the heat exchanging device 20 and the cross-flow fan 30.
Specifically, the cabinet 10 has an intake vent 120 at an upper portion thereof and an exhaust vent 110 at a lower portion thereof.
In the air conditioning indoor unit 1 of the embodiment of the present invention, the heat exchanging device 20 is configured to exchange heat with air flowing therethrough to change the temperature of the air flowing therethrough into heat exchange air (cold air or hot air). The cross-flow fan 30 is configured to promote a portion of natural air entering from the air inlet 120 to flow toward the heat exchanging device 20, and promote heat exchanged air after heat exchange by the heat exchanging device 20 to flow toward the air outlet 110 via the cross-flow fan 30. The ion wind generating device 40 is configured to cause another portion of the natural air entering from the air inlet 120 to directly flow to the air outlet 110 via the ion wind generating device 40 by an electric force, so that the another portion of the natural air is mixed with the heat exchange air after the heat exchange is performed by the heat exchange device 20 at the air outlet 110. It should be emphasized that the natural air referred to in the present invention means air that has not been heat-exchanged by the heat exchanging device 20, i.e. the ambient air of the ambient space where the indoor unit 1 of the air conditioner is located. The heat exchange air referred to in the present invention means air after heat exchange by the heat exchange device 20, and when the indoor unit 1 of the air conditioner is in a heating mode, the heat exchange air may be hot air, and when the indoor unit 1 of the air conditioner is in a cooling mode, the heat exchange air may be cold air.
The heat-exchanging air after heat exchange by the heat-exchanging device 20 and the natural air without heat exchange by the heat-exchanging device 20 are mixed at the air outlet 110 to form soft, uniform and comfortable mixed air. Even if the mixed air is directly blown to the user, the user can only feel cool but not cold or warm but not hot comfortable experience, and sensory stimulation cannot be brought to the user or the physical health of the user is not damaged. For example, in summer, when the indoor temperature of the air-conditioning indoor unit 1 is 26 to 35 ℃ for cooling, the temperature of the cooling air blown out is about 18 ℃. However, after natural air is mixed with the 18 ℃ refrigerating air by the ion wind generating device 40, the outlet air temperature can be raised to about 23 ℃, and the 23 ℃ refrigerating wind is softer and more comfortable than the 18 ℃ refrigerating wind and is closer to the comfort degree of a human body.
Meanwhile, the air-conditioning indoor unit 1 of the invention drives the cross-flow fan 30 to send out heat exchange air and drives the ion wind generating device 40 to introduce natural air together with the cross-flow fan 30, on one hand, the air-conditioning indoor unit 1 has larger integral wind quantity and wind speed, meets the requirement of indoor integral refrigerating capacity on the premise of ensuring the comfort degree of users, ensures the balance of indoor temperature and improves the refrigerating/heating efficiency and the refrigerating/heating effect of the air-conditioning indoor unit 1; on the other hand, the ion wind generating device 40 utilizes the electric field force to make the particles in the air obtain kinetic energy, so as to form a soft, uniform and comfortable ion wind without local high-speed airflow (since the generation principle of the ion wind is easily obtained and known by those skilled in the art, the description is omitted here). Compared with a rotary air supply assembly (such as a fan), the ion wind generating device 40 has the advantages of small pressure loss, low energy consumption, low noise and the like, so that the overall noise of the air conditioner indoor unit 1 during operation is reduced to a certain extent. Meanwhile, the ion wind generated by the ion wind generating device 40 is not generated by pressure, but is a soft wind close to nature generated by electric field force, so that the comfort level of the air-conditioning indoor unit 1 can be further improved.
In some embodiments of the present invention, the casing 10 further includes a frame 11 for supporting the crossflow blower 30 and the heat exchange device 20, a casing 12 covering the frame 11, a panel 13 attached to a front side of the casing 12 for constituting a front portion of the casing 10, and a left end cap 14 and a right end cap 15 respectively provided at both sides of the casing 10. Specifically, the air inlet 120 is formed at the top of the housing 12, the cross-flow fan 30 is disposed inside the housing 12 and below the heat exchanging device 20, the ion wind generating device 40 is disposed outside the housing 12 by means of clamping or other connection methods and is located between the housing 12 and the panel 13, and is disposed side by side in front and back with the cross-flow fan 30 and the heat exchanging device 20, that is, the ion wind generating device 40 is fixedly mounted at the outside of the supporting structure of the housing 12, the cross-flow fan 30 and the heat exchanging device 20 are fixedly mounted at the inside of the supporting structure of the housing 12, and the air inlet 120 extends from the top of the supporting structure of the housing 12 to the front and back (not shown in the drawing) to allow natural air or heat exchange through the heat exchanging device 20 to form heat exchanging wind, or enter the ion wind generating device 40 to form ion wind.
In summary, the air-conditioning indoor unit 1 according to the embodiment of the present invention is designed and reasonably arranged in a special manner for the structures and positions of the air inlet 120, the air outlet 110, the heat exchanging device 20, the cross-flow fan 30, and the ion wind generating device 40, and the ion wind blowing technology staying on a theoretical level for a long time is improved in an original manner, so that the ion wind blowing technology is perfectly combined with a fan type blowing component, and the technical problems of high noise, poor experience effect, poor appearance effect, and the like in the prior art are solved with a simple structure. Meanwhile, the technical scheme of the invention has better realizability and economic value, is an innovation of the air supply form of the air conditioner and has better popularization value.
The ion wind generating device 40 ionizes air to generate a large amount of charged particles, which adsorb solid particles, dust, pollutants, or the like, and then move in a certain direction by an electric force. The ion wind is formed by high voltage electric field, so it has high effect of sterilizing and decomposing harmful gas pollutant.
Fig. 4 is a schematic front view of an air conditioning indoor unit according to an embodiment of the present invention, and fig. 5 is a schematic cross-sectional view taken along a sectional line a-a of fig. 4. In some embodiments of the present invention, referring to fig. 5, a first air guiding channel 44 for guiding the natural air flowing out through the ion wind generating device 40 to the air outlet 110 and a second air guiding channel 33 for guiding the heat exchange air flowing out through the cross flow fan 30 to the air outlet 110 are further formed in the housing 10. Specifically, the first air guiding channel 44 extends or curves forward from top to bottom to the front of the air outlet 110 so that the natural air flowing out through the ion wind generating device 40 can all reach the air outlet 110, and the second air guiding channel 33 extends or curves forward from top to bottom to the rear of the air outlet 110 so that the heat exchange air passing through the cross flow fan 30 can all reach the air outlet 110.
In some preferred embodiments of the present invention, the second wind guiding passage 33 provided at the bottom of the cross flow fan 30 is inclined or bent to a greater degree than the first wind guiding passage 44 provided at the bottom of the ion wind generating device 40. Specifically, the second air guiding channel 33 may be communicated with the rear half of the air outlet 110, and the first air guiding channel 44 may be communicated with the front half of the air outlet 110. Therefore, the forward inclination degree of the heat exchange air blown out from the air outlet 110 and guided through the second air guide passage 33 of the cross flow fan 30 is larger than the forward inclination degree of the natural air blown out from the air outlet 110 and guided through the first air guide passage 44 of the ion wind generating device 40, so that the cross mixing of the heat exchange air at the rear side and the natural air at the front side is facilitated, and the mixing effect of the two air is better.
Further, the inclination or curvature of the second air guide passage 33 at the bottom of the cross-flow fan 30 and the inclination or curvature of the first air guide passage 44 at the bottom of the ion wind generating device 40 are configured such that: the lower air outlet 110 is located below the horizontal plane where the lower air outlet is located and supplies air within the range of 0-85 degrees with the horizontal plane. Specifically, the lower air blowing port 110 can blow air in a region between a broken line m and a broken line n in fig. 5, in which a curved arrow between the broken line m and the broken line n is a substantial flow direction of the air flow, after being guided through the first air guiding passage 44 and the second air guiding passage 33. Therefore, when the air-conditioning indoor unit 1 heats, the lower air outlet 110 can blow down hot air which forms an angle of 85 degrees with the horizontal plane, thereby overcoming the technical problems that the hot air is easy to rise and is difficult to blow down.
Fig. 6 is a schematic structural view of a pre-stage discharge module of the ion wind generating apparatus according to an embodiment of the present invention. In some embodiments of the present invention, referring to fig. 3, 5 and 6, the ion wind generating device 40 comprises at least one discharge module. Specifically, the technical solution of the present invention is described in detail by taking an example that the ion wind generating device 40 includes two discharging modules arranged in sequence along the wind outlet direction. In some embodiments of the present invention, the ion wind generating device 40 may include a plurality of discharge modules arranged in sequence along the wind outlet direction, and the two discharge modules are a front-stage discharge module 410 located at the lower portion in the wind outlet direction of the ion wind generating device 40 and a rear-stage discharge module 420 located at the upper portion in the wind outlet direction. The pre-discharge module 410 has a mesh electrode 411 and a plurality of needle electrodes 412, and the post-discharge module 420 has a mesh electrode 421 and a plurality of needle electrodes 422. Taking the pre-stage discharge module 410 as an example, it includes a housing 414, a mesh electrode 411 disposed inside the housing and horizontally disposed, and a plurality of needle electrodes 412 distributed on the upper side of the mesh electrode 411 and arranged in an array.
Also for example, the front stage discharge module 410 has a housing 414 with four peripheral wall plates for forming therein an independent air supply duct isolated from the flow path of the heat exchange air, and the housing 414 is hollowed out or provided with a vent hole at the top to allow natural air to flow into the housing 414. The needle point of the needle electrode 412 of each discharge module 410 is close to the mesh electrode 411, positive and negative high voltage electrodes are respectively applied to the needle electrode 412 and the mesh electrode 411, the needle electrode 412 is equivalent to an emitting electrode for generating corona discharge, and the mesh electrode 411 is equivalent to a receiving electrode. The flow direction of the ion wind generated by each discharge module 410 is from top to bottom, and the arrangement direction of the plurality of needle electrodes 412 and the mesh electrodes 411 is the same as the flow direction of the ion wind.
In some embodiments of the present invention, also taking pre-stage discharge module 410 as an example, it further includes a plurality of metal conductive bars 413. Each of the metal conductive strips 413 has an insulating protective layer formed on the outside thereof and a conductive layer formed on the inside thereof, which is electrically connected to the metal needle electrode 412.
Specifically, also taking pre-stage discharge module 410 as an example, a plurality of needle electrodes 412 are uniformly distributed on the lower side of metal conductive bar 413 facing mesh electrode 411. The lower surface of each metal conducting strip 413 is provided with a plurality of pin holes for mounting the pin electrodes 412. The aperture of the pinhole is slightly smaller than the diameter of needle electrode 412 so that the pinhole is an interference fit with needle electrode 412. The filling layer filled by the welding process is disposed around the pin hole inserted into the pin electrode 412, that is, the filling layer filled by the welding process is disposed around the pin electrode 412 to ensure that the pin electrode 412 and the conductive layer in the metal conductive bar 413 are well electrically connected, and the conductive layer is strictly prevented from being exposed to the outside, thereby preventing the occurrence of the phenomena of the spurious discharge or the sparking.
Fig. 7 is a schematic cross-sectional view of a pre-stage discharge module of an ion wind generating apparatus according to an embodiment of the present invention. Referring to fig. 7, in order to increase the blowing speed of the ion wind generating apparatus, the designer of the present invention performed a lot of wind speed measurement experiments, and found that, taking the pre-stage discharge module 410 as an example, the distance L between the tip of each needle electrode 412 and the mesh electrode 411 is set to satisfy L = aL1(wherein a is any constant in the range of 0.7-1.3, i.e. a can be 0.7, 0.8, 0.9, 1.0, 1.1, 1.2 or 1.3, L1So that the wind speed of the ion wind at the wind speed central point of the mesh electrode 411 reaches the maximum wind speed VmaxThe distance between the needle point of the needle-shaped electrode 412 and the mesh-shaped electrode 411, and the wind speed center point of the mesh-shaped electrode 411 is the projection point of the needle-shaped electrode 412 on the mesh-shaped electrode 411), on the one hand, the wind speed of the ion wind generated by the two ion wind generating devices can better meet the normal use requirement of a user, and on the other hand, the needle-shaped electrode 412 can be partially overlapped in the region of the mesh-shaped electrode 411 generating the effective ion wind to achieve the projection effect of the shadowless lamp, so that the ion wind distribution of the mesh-shaped electrode 411 is more uniform.
In order to increase the amount of air supplied to the ion wind generator, the present inventors conducted a large number of experiments to measure the projected radius of the tips, and found that, taking pre-stage discharge module 410 as an example, the distance R between the tips of two adjacent needle electrodes 412 is set to satisfy R = aR1(wherein, R1For the wind speed to reach the maximum wind speed VmaxB times the distance between the wind speed measuring point and the wind speed central point, wherein b is any constant in the range of 0.3-0.7, namely b can be 0.3, 0.4, 0.5, 0.6 or 0.7, and the value of a is the same as the above), the air volume of the ion wind generated by the two ion wind generating devices can better meet the normal use requirement of a user. Meanwhile, after the distance between two adjacent needle electrodes 412 is specially designed, it is possible to avoid that the wind speeds between two adjacent needle electrodes 412 are mutually offset due to too close distance, and to avoid that the wind volume is reduced and the wind volume distribution is uneven due to too far distance between two needle electrodes 412.
Therefore, the ion wind generating device can generate uniform ion wind with larger wind quantity by reasonably designing the spatial position relationship between the needle electrodes and the mesh electrodes and reasonably distributing the position relationship among the needle electrodes, thereby improving the wind speed, the wind quantity and the wind efficiency of the ion wind generating device.
Fig. 8 is a schematic structural view of a connection relationship between a plurality of discharge modules of the ion wind generating apparatus according to an embodiment of the present invention. Referring to fig. 8, in some embodiments of the present invention, the ion wind generating device 40 includes a plurality of discharge modules sequentially arranged along the wind outlet direction and connected in parallel, that is, the needle electrode of each discharge module is electrically connected to a positive polarity or negative polarity high voltage terminal, and the mesh electrode of each discharge module is electrically connected to the ground terminal, so that the plurality of discharge modules are connected in parallel. Taking pre-discharge module 410 as an example, needle electrode 412 is electrically connected to a positive or negative high voltage terminal, and mesh electrode 411 is electrically connected to a ground terminal.
Fig. 9 is a schematic structural view of a connection relationship between a plurality of discharge modules of an ion wind generating apparatus according to another embodiment of the present invention. Referring to fig. 9, in another embodiment of the present invention, the ion wind generating device 40 includes a plurality of discharge modules sequentially arranged along the wind outlet direction and connected in series, that is, the needle electrode of the discharge module located at one end of the ion wind generating device 40 is electrically connected to a positive or negative high voltage terminal, the mesh electrode of the discharge module located at the other end is electrically connected to the ground terminal, and the mesh electrode of each discharge module except the discharge module located at the other end arranged from one end of the ion wind generating device 40 to the other end is electrically connected to the needle electrode of the discharge module located adjacent to the other end, so that the plurality of discharge modules are connected in series. Taking the pre-discharge module 410 as an example, the needle electrode 412 of the pre-discharge module 410 located at one end of the ion wind generator 40 is electrically connected to the mesh electrode located adjacent to and upstream of the pre-discharge module 410, and the mesh electrode 411 of the pre-discharge module 410 is electrically connected to the ground terminal.
In the embodiment shown in fig. 8 and 9, the plurality of discharging modules in the ion wind generating device 40 are sequentially arranged along the wind outlet direction and connected in series or in parallel, and when the needle electrode (corresponding to the emitting electrode) is connected to the high-voltage positive electrode and the mesh electrode (corresponding to the receiving electrode or the grounding electrode) is grounded, a corona discharge phenomenon is generated between the needle electrode and the corresponding mesh electrode in each discharging module, so that the ion wind can be accelerated multiple times through the plurality of discharging modules, and the superposition of the wind speed can be realized to obtain a higher wind outlet speed. And negative pressure can be formed under the action of high-speed air outlet, so that the air inlet volume is further increased, and the air supply speed, the air supply volume and the air supply efficiency of the multi-stage ion air supply module are improved.
In some embodiments of the present invention, the number of the discharge modules may be multiple, the multiple discharge modules are sequentially arranged, and every two needle electrodes of the discharge modules adjacent to each other in the air outlet direction are arranged in a straight-line manner, that is, projections of every two needle electrodes of the discharge modules adjacent to each other in the air outlet direction on the air outlet surface of the ion wind generating device coincide. Specifically, the technical solution of the present invention is also explained in detail by taking an example that the ion wind generating device 40 includes two discharge modules arranged in sequence along the wind outlet direction. The two discharge modules are a front-stage discharge module 410 located at the lower portion in the air outlet direction of the ion wind generating device 40 and a rear-stage discharge module 420 located at the upper portion in the air outlet direction. The pre-discharge module 410 has a mesh electrode 411 and a plurality of needle electrodes 412, and the post-discharge module 420 has a mesh electrode 421 and a plurality of needle electrodes 422. Fig. 10 is a schematic front view of a pin grid layout of an ion wind generating device according to an embodiment of the present invention, fig. 11 is a schematic side view of a pin grid layout of an ion wind generating device according to an embodiment of the present invention, and fig. 12 is a schematic top view of a pin grid layout of an ion wind generating device according to an embodiment of the present invention. For convenience of description and understanding of the technical solution of the present invention, directional coordinates are given in fig. 10 to 12, wherein the OX direction indicates a front-back direction, and the direction indicated by the OX arrow is front and the direction indicated by the arrow facing away from the OX arrow is back; the OY direction represents a lateral direction; the OZ direction represents the air-out direction. Referring to fig. 10 to 12, in the front view shown in fig. 10, the projections of the needle electrodes 412 of the front stage discharge module 410 and the needle electrodes 422 of the rear stage discharge module 420 on the OY axis coincide, that is, the needle electrodes corresponding to the upper and lower discharge modules are in the same position in the lateral direction. In the side view shown in fig. 11, the projections of the needle electrodes 412 of the front stage discharge module 410 and the needle electrodes 422 of the rear stage discharge module 420 on the OX axis coincide, that is, the needle electrodes corresponding to the upper and lower discharge modules are in the same position in the front-rear direction. In the plan view shown in fig. 12, the needle electrodes 412 of the front stage discharge module 410 and the needle electrodes 422 of the rear stage discharge module 420 completely overlap each other. Therefore, a larger and stronger electric field is generated in the area corresponding to the tip of each needle electrode, so that the area can generate ion wind with high local wind speed, and the ion wind can blow on the user body to have stronger wind feeling. In other words, this arrangement can obtain a local large wind speed near each wind speed center point of the mesh electrode, so as to improve the wind sensation when the natural air driven by the ion wind generating device in the indoor unit 1 of the air conditioner flows out from the air outlet.
In some alternative embodiments of the present invention, the number of the discharge modules may also be multiple, and the multiple discharge modules are arranged in sequence, and the needle electrodes of every two adjacent discharge modules along the air outlet direction are arranged in a staggered manner. One of the dislocation arrangement modes is as follows: the needle electrodes of every two discharge modules adjacent to each other in the air outlet direction are arranged in a staggered manner in the transverse direction, and the projections of the corresponding needle electrodes of every two discharge modules adjacent to each other in the air outlet direction in the air outlet face of the ion wind generating device 40 are on the same horizontal line (that is, the transverse positions of the needle electrodes of every two discharge modules adjacent to each other in the air outlet direction are different, but the positions of the corresponding needle electrodes in the front-back direction are the same). Specifically, it is also taken as an example that the ion wind generating device 40 includes two discharge modules arranged in sequence along the wind outlet direction. Fig. 13 is a schematic front view of a pin grid layout of an ion wind generating device according to an embodiment of the present invention, fig. 14 is a schematic side view of a pin grid layout of an ion wind generating device according to an embodiment of the present invention, and fig. 15 is a schematic top view of a pin grid layout of an ion wind generating device according to an embodiment of the present invention. The meaning of the direction coordinates in fig. 13 to 15 is the same as that of the above embodiment, and is not described again here. In the front view shown in fig. 13, the projections of the corresponding needle electrodes 412 of the front stage discharge module 410 and the corresponding needle electrodes 422 of the rear stage discharge module 420 on the OY axis are misaligned, that is, the needle electrodes corresponding to the upper and lower discharge modules are located at different positions in the lateral direction. In the side view shown in fig. 14, the projections of the needle electrodes 412 of the front stage discharge module 410 and the needle electrodes 422 of the rear stage discharge module 420 on the OX axis coincide, that is, the needle electrodes corresponding to the upper and lower discharge modules are in the same position in the front-rear direction. In the plan view shown in fig. 15, the structure of the front stage discharge module 410 is shown by a dotted line and the structure of the rear stage discharge module 420 is shown by a solid line for easy understanding. The needle electrodes 412 of the pre-stage discharge module 410 and the needle electrodes 422 of the post-stage discharge module 420 are shifted from each other in the OY direction, but there is no difference in displacement in the OX direction. Therefore, uniform soft wind can be generated in a plurality of linear regions in the horizontal direction, and the superposition of a plurality of discharge modules can form a larger and stronger electric field in the linear regions, so that the wind speed of the ion wind in the linear regions is relatively higher. Furthermore, projections of each group of three adjacent needle electrodes formed by the needle electrodes of the plurality of discharge modules in the horizontal plane form an isosceles triangle, so that the ion wind generated by the ion wind generating device is ensured to be distributed uniformly.
Another staggered arrangement mode is as follows: the needle electrodes of every two adjacent discharge modules along the air outlet direction are arranged in a staggered manner in the transverse direction and the front-back direction. Specifically, it is also taken as an example that the ion wind generating device 40 includes two discharge modules arranged in sequence along the wind outlet direction. Fig. 16 is a schematic front view of a pin grid layout of an ion wind generating device according to an embodiment of the present invention, fig. 17 is a schematic side view of a pin grid layout of an ion wind generating device according to an embodiment of the present invention, and fig. 18 is a schematic top view of a pin grid layout of an ion wind generating device according to an embodiment of the present invention. The meaning of the direction coordinates in fig. 16 to 18 is the same as that of the above embodiment, and is not described again here. In the front view shown in fig. 16, the projections of the needle electrodes 412 of the front stage discharge module 410 and the needle electrodes 422 of the rear stage discharge module 420 on the OY axis are misaligned, that is, the needle electrodes corresponding to the upper and lower discharge modules are located at different positions in the lateral direction. In the side view shown in fig. 17, the projections of the needle electrodes 412 of the front stage discharge module 410 and the needle electrodes 422 of the rear stage discharge module 420 on the OX axis are misaligned, that is, the needle electrodes corresponding to the upper and lower discharge modules are also at different positions in the front-rear direction. In the plan view shown in fig. 18, the needle electrodes 412 of the front stage discharge module 410 and the needle electrodes 422 of the rear stage discharge module 420 are arranged in a staggered manner in both the OX direction and the OY direction. Therefore, the ion wind generated by the ion wind generating device can be uniformly distributed in the wind outlet surface of the ion wind generating device, so that soft, uniform and large-wind-volume air supply can be realized under the conditions of low voltage, low electric field intensity and low power. That is, the needle electrodes of every two adjacent discharge modules along the air outlet direction are staggered, so that the gaps between the needle electrodes of each discharge module can be filled. Therefore, relatively uniform ion wind can be formed in the whole area of the mesh electrode, and the whole air supply quantity is improved. Furthermore, each group of three needle-shaped electrode projections adjacent to each other formed by the needle-shaped electrodes of the plurality of discharge modules in the air outlet surface of the ion wind generating device form an equilateral triangle, so that the ion wind generated by the ion wind generating device is more uniformly distributed.
It should be further understood by those skilled in the art that terms such as "upper", "lower", "inner", "outer", "vertical", "horizontal", "front", "rear", and the like used in the embodiments of the present invention to indicate orientation or positional relationship are based on the actual use state of the air conditioning indoor unit 1, and these terms are only used for convenience of description and understanding of the technical solution of the present invention, and do not indicate or imply that the device or component referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.

Claims (9)

1. An indoor unit of an air conditioner, comprising:
the air conditioner comprises a shell, a fan and a control device, wherein the shell is provided with an air inlet positioned at the upper part of the shell and an air outlet positioned at the lower part of the shell;
the heat exchange device is arranged in the shell and is configured to exchange heat with air flowing through the shell;
the cross-flow fan is arranged in the shell, is positioned at the lower part of the heat exchange device and is configured to promote part of natural air entering from the air inlet to flow to the heat exchange device and promote heat exchange air subjected to heat exchange by the heat exchange device to flow to the air outlet; and
the ion wind generating device is arranged in the shell, is positioned on the front sides of the heat exchange device and the cross-flow fan, and is configured to impel another part of natural air entering from the air inlet to directly flow to the air outlet through the ion wind generating device by virtue of electric field force so as to mix the another part of natural air with the heat exchange air after heat exchange by the heat exchange device at the air outlet;
a first air guide channel for guiding natural air flowing out of the ion wind generating device to flow to the air outlet and a second air guide channel for guiding heat exchange air flowing out of the cross-flow fan to flow to the air outlet are formed in the shell;
the first air guide channel extends forwards or bends to the front part of the air outlet from top to bottom, and the second air guide channel extends forwards or bends to the rear part of the air outlet from top to bottom; the inclination degree or the bending degree of the second air guide channel is greater than that of the first air guide channel;
the ion wind generating device comprises at least one discharging module, each discharging module comprises a shell, the shell is provided with four peripheral wall plates so as to form an independent air supply duct separated from a flow path of heat exchange air, and the upper part of the shell is hollowed or provided with a ventilation hole so as to allow natural air to flow into the shell.
2. The indoor unit of an air conditioner according to claim 1,
each discharge module comprises a mesh electrode and a plurality of needle electrodes, wherein the mesh electrode is arranged in the shell and is horizontally placed, and the needle electrodes are distributed on the upper side of the mesh electrode.
3. The indoor unit of an air conditioner according to claim 2,
the number of the discharge modules is multiple, the discharge modules are sequentially arranged, and the projections of every two needle-shaped electrodes of the discharge modules adjacent to each other in the air outlet direction in the air outlet face of the ion wind generating device are superposed.
4. The indoor unit of an air conditioner according to claim 2,
the number of the discharging modules is multiple, the discharging modules are sequentially arranged, every two needle electrodes of the discharging modules which are adjacent in the air outlet direction are arranged in a staggered mode in the transverse direction, and the projections of the corresponding needle electrodes of the discharging modules which are adjacent in the air outlet direction are located on the same horizontal line in the air outlet face of the ion wind generating device.
5. The indoor unit of an air conditioner according to claim 2,
the number of the discharge modules is multiple, the discharge modules are sequentially arranged, and every two needle-shaped electrodes of the discharge modules which are adjacent along the air outlet direction are arranged in a staggered mode in the transverse direction and the front-back direction.
6. The indoor unit of an air conditioner according to claim 2,
the number of the discharge modules is multiple, the discharge modules are sequentially arranged along the air outlet direction, the needle electrode of each discharge module is electrically connected with a positive polarity or negative polarity high-voltage terminal, and the mesh electrode of each discharge module is electrically connected with a grounding terminal, so that the discharge modules are connected in parallel.
7. The indoor unit of an air conditioner according to claim 2,
the number of the discharge modules is multiple, the discharge modules are sequentially arranged along the air outlet direction, the needle electrode of the discharge module positioned at one end of the ion wind generating device is electrically connected with a positive polarity or negative polarity high-voltage terminal, the mesh electrode of the discharge module positioned at the other end of the ion wind generating device is electrically connected with a grounding terminal, and the mesh electrodes of all the discharge modules except the discharge module positioned at the other end of the ion wind generating device, which are arranged from one end of the ion wind generating device to the other end of the ion wind generating device, are electrically connected with the needle electrode of the adjacent discharge module positioned at the downstream of the ion wind generating device, so that the discharge modules are connected in series.
8. The indoor unit of an air conditioner according to claim 2,
in each of the discharge modules, a distance L between the tip of the needle electrode and the mesh electrode is set so as to satisfy: l ═aL1Wherein a is any constant in the range of 0.7-1.3, L1So that the wind speed of the ion wind at the wind speed central point of the mesh electrode reaches the maximum wind speed VmaxThe distance between the tip of the needle electrode and the mesh electrode is equal to the distance between the tip of the needle electrode and the mesh electrode, and the wind speed central point of the mesh electrode is the projection point of the tip of the needle electrode on the mesh electrode.
9. An indoor unit of an air conditioner according to claim 1,
the casing comprises a framework for supporting the cross-flow fan and the heat exchange device, a casing covering the framework, and a panel connected to the front side of the casing for forming the front part of the casing
The air inlet is formed in the top of the housing, and the ion wind generating device is arranged between the housing and the panel.
CN201610935628.XA 2016-11-01 2016-11-01 Indoor unit of air conditioner Active CN108019818B (en)

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CN110748967B (en) * 2019-10-18 2021-08-27 重庆海尔空调器有限公司 Machine in heat exchanger subassembly and air conditioning

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Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China

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Patentee after: Haier Smart Home Co., Ltd.

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